This is used to point out the sheer nerdiness of
a statement or person
Man B:"Dude, your such a WAN"
Man A:"Damn man thats the best looking girl ive ever seen"
Man B:"She doesnt look better than Zero Suit Samus though"
Man A:"Omg your such a WAN!"
"That meal was wan-tastic" - so good it is worthy of ejaculation.